河海大学学报（自然科学版）
河海大學學報（自然科學版）
하해대학학보（자연과학판）
JOURNAL OF HOHAI UNIVERSITY (NATURAL SCIENCES)
2014年
6期
524-528
,共5页
土工袋%有限元%竖向位移%水平位移%孔隙水压力%土工袋张力
土工袋%有限元%豎嚮位移%水平位移%孔隙水壓力%土工袋張力
토공대%유한원%수향위이%수평위이%공극수압력%토공대장력
soilbag%FEM%vertical displacement%horizontal displacement%pore pressure%soilbag tension
利用有限元数值模拟方法，研究土工袋在竖向荷载下的变形、孔隙水压力、应力及袋子张力。土工袋由土体和编织袋2种材料组成，土体采用修正剑桥本构模型，编织袋采用改进的两节点张拉杆单元模拟。计算结果表明，竖向荷载下土工袋的最大水平位移和竖向位移分别发生在土工袋两侧边缘和土工袋表层，孔隙水压力随加载时间先增长后消散，同时，袋子的平均张力与荷载呈近似线性关系。
利用有限元數值模擬方法，研究土工袋在豎嚮荷載下的變形、孔隙水壓力、應力及袋子張力。土工袋由土體和編織袋2種材料組成，土體採用脩正劍橋本構模型，編織袋採用改進的兩節點張拉桿單元模擬。計算結果錶明，豎嚮荷載下土工袋的最大水平位移和豎嚮位移分彆髮生在土工袋兩側邊緣和土工袋錶層，孔隙水壓力隨加載時間先增長後消散，同時，袋子的平均張力與荷載呈近似線性關繫。
이용유한원수치모의방법，연구토공대재수향하재하적변형、공극수압력、응력급대자장력。토공대유토체화편직대2충재료조성，토체채용수정검교본구모형，편직대채용개진적량절점장랍간단원모의。계산결과표명，수향하재하토공대적최대수평위이화수향위이분별발생재토공대량측변연화토공대표층，공극수압력수가재시간선증장후소산，동시，대자적평균장력여하재정근사선성관계。
The finite element method (FEM) was used to study the deformation, pore pressure, stress, and bag tension of a soilbag under vertical loads. The soilbag was composed of the soil modeled by a modified Cam-Clay constitutive relationship, and a woven bag modeled by a modified two-node beam element. The simulation results show that the largest horizontal displacement occurred on both sides of the soilbag, while the largest vertical displacement took place on the surface of the soilbag. The pore pressure increased initially, and then decreased with the increase of loading time. In addition, the average tension of the bag was approximately linearly correlated with the loads.
